#include <iostream>
using namespace std;
#include <cstdio>

int main(int argc, char *argv[])
{
	int x = 0;
	double y = 0.0;

	cout << "input two number: ";
	// >> 输入流运算符  
	//不能输入自定义类型
	cin >> x >> y;		//从标准输入读取x 和 y的值
	//int ret = scanf("%d%lf", &x, &y);
	cout << "ret: " << ret <<"x: " << x << ", y: " << y << endl;

	return 0;
}
